7. A boy is running along a rectangular park whose length and breadth are 180 m and 160 m respectively. Find the distance covered by boy in kilometres in four rounds.
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Answer:
830 km
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We have to find the perimeter
Lenght = 180 m
Breadth = 160 m
Perimeter = 2 x l+b
= 2 x 180 + 160
= 2 x 340
= 680 m is the perimeter
= 680 x 4 as the boy ran 4 rounds
= so the answer is 2,720 m
Lenght = 180 m
Breadth = 160 m
Perimeter = 2 x l+b
= 2 x 180 + 160
= 2 x 340
= 680 m is the perimeter
= 680 x 4 as the boy ran 4 rounds
= so the answer is 2,720 m
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